345187823 has 2 divisors, whose sum is σ = 345187824. Its totient is φ = 345187822.

The previous prime is 345187813. The next prime is 345187867. The reversal of 345187823 is 328781543.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 345187823 - 2⁴ = 345187807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345187813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172593911 + 172593912.

It is an arithmetic number, because the mean of its divisors is an integer number (172593912).

Almost surely, 2^345187823 is an apocalyptic number.

345187823 is a deficient number, since it is larger than the sum of its proper divisors (1).

345187823 is an equidigital number, since it uses as much as digits as its factorization.

345187823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 161280, while the sum is 41.

The square root of 345187823 is about 18579.2309582501. The cubic root of 345187823 is about 701.4851617299.

The spelling of 345187823 in words is "three hundred forty-five million, one hundred eighty-seven thousand, eight hundred twenty-three".